US4470474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low range automatic weighing device
Assignee: Pitney Bowes Inc
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Filing: 1982-07-06
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Granted: 1984-09-11
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Expires: 2002-07-06
Abstract
Abstract A weighing device is disclosed which comprises a frame, a pan element for supporting a load to be weighed, a channel member connected to the pan for retaining a plurality of weight elements in a vertically movable manner, a motor supported within the frame, a shaft member operatively connected to and extending from the motor and a plurality of support members having top end portions adapted to receive and lift one of the weight elements. Two arms are secured to the shaft member and each extends in a direction toward the support members. A switch is provided for energizing the motor when the pan is depressed by a load. The motor turns the shaft member and guides each of the arms alternately into contact with successive support members in a step-by-step manner and thereby lift a corresponding number of the weights substantially equal to the weight of the load.
Inventors
- 👤 Walter E. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:31
CPC Classifications
G; G01; G01G; G01G1/00; G01G1/18; G01G1/26; G01G1/36; G01G1/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of support members each having top end portions adapted to receive and lift one of said weight elements; first and second arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second arms alternately into contact with successive support members in a step-by-step manner to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
Claim 2
Dependent Claim
163 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of support members each having top end portions adapted to receive and lift one of said weight elements; first and second arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second arms alternately into contact with successive support members in a step-by-step manner to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
Claim 3
Dependent Claim
165 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of support members each having top end portions adapted to receive and lift one of said weight elements; first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive support members in a step-by-step manner to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
Claim 4
Dependent Claim
165 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of support members each having top end portions adapted to receive and lift one of said weight elements; first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive support members in a step-by-step manner to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
Claim 5
Dependent Claim
42 words
A weighing device according to claim 2 wherein said first camming arm is guided into contact with support members positioned in a first sector while said second camming arm is alternately guided into contact with support members positioned in a second sector.
Claim 6
Dependent Claim
16 words
A weighing device according to claim 3 wherein each of said sectors is about 180 degrees.
Claim 7
Dependent Claim
14 words
A weighing device according to claim 2 wherein said motor is a stepping motor.
Claim 8
Dependent Claim
22 words
A weighing device according to claim 2 wherein said weight elements comprises sixteen elements, each of said elements weighing about one ounce.
Claim 9
Dependent Claim
19 words
A weighing device according to claim 2 further comprising read-out means for visually displaying the weight of said load.
Claim 10
Dependent Claim
203 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of collapsible support members; each of said support members secured at one end thereof to said frame and each having top end portions adapted to receive and lift one of said weight elements when said member is in an extended and non-collapsed position; first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive collapsed support members in a step-by-step manner to place a number of said support members in a non-collapsed position to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
Claim 11
Dependent Claim
203 words
A weighing device comprising: a frame; a pan element for supporting a load to be weighed; means connected to said pan for retaining a plurality of weight elements in a vertically movable manner; a motor supported within said frame; a shaft member operatively connected to and extending from said motor and supporting said pan element; a plurality of collapsible support members; each of said support members secured at one end thereof to said frame and each having top end portions adapted to receive and lift one of said weight elements when said member is in an extended and non-collapsed position; first and second camming arms, each secured to said shaft member and each extending in a direction toward said support members; and switching means for energizing said motor when said pan is depressed by a weighted load said motor turning said shaft member and guiding said first and second camming arms alternately into contact with successive collapsed support members in a step-by-step manner to place a number of said support members in a non-collapsed position to alternately raise said weight elements diametrically across from each other and thereby lift a corresponding number of said weights substantially equal to the weight of said load.
References Cited (Backward Citations)
US4411328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |